|
|
|||
|
|
|||
|
From Digital Principles & Logic Design
The Generic Array Logic or GAL device is another type of configurable PAL device. GAL devices are intended as pin-to-pin replacements for a wide variety of PAL devices. It is designed to be compatible, all the way to the fuse level, for any simpler PAL which can be directly implemented in the GAL device. In this device, the OR gate is considered to be a part of a macrocell to obtain various types of I/O configurations found in the PAL devices that it is designed to replace. Another family of devices that are intended for PAL replacements are programmable electrically erasable logic or PEEL devices. Its output macrocell can be programmed for numerous types of I/O configurations. More >>
© 2006-2008 Infinity Science Press. All rights reserved.
Products & Services
Digital multimeters (or multi-meters) are used to measure electrical quantities such as voltage, current, resistance, frequency, temperature, capacitance, and time period measurements.
Microcontrollers (MCU) are complete computer systems on a chip. They combine an arithmetic logic unit (ALU), memory, timer/counters, serial port, input/output (I/O) ports and a clock oscillator.
Microprocessor chips (MPU) are silicon devices that serve as the central processing unit (CPU) in computers. They contain thousands of electronic components and use a collection of machine instructions to perform mathematical operations and move data from one memory location to another.
Logic gates are electronic circuits that combine digital signals according to boolean algebra.
Specialty programmable logic devices are specialty or proprietary products and accessories related to programmable logic devices (PLDs).
Product Announcements
Topics of Interest
These type of programmable devices are based on the basic structure equivalent to programmable logic array or PLA. Over the years, programmable arrays have increased in size and complexity. Highly...
(Read More)
In Chapter 5, we discussed various combinational circuits that are commercially available in IC packages. We also saw how other combinational circuits and Boolean functions are realized with the help...
(Read More)
Let us consider that the following functions are to be realized using a PAL device.
F1 (A,B,C) = ( 1,2,4,5,7)
F2 (A,B,C) = ( 0,1,3,5,7)
Similar to designing with PLA, in the case of a PAL device...
(Read More)
The basic concepts of programmable logic devices and programmable gate arrays have been discussed. With the development of these devices, complex digital systems have become possible to be designed.
(Read More)
The final programmable logic device to be discussed is the Programmable Array Logic or PAL device. The general structure of this device is similar to PLA, but in a PAL device only AND gates are...
(Read More)
|
|
